/**
* Helper method to get all messages
*
* @param Language $lang - Language object to get all messages from
* @return array - list of all message keys
*/
private static function getAllMessageKeys(Language $lang)
{
wfProfileIn(__METHOD__);
if (is_null(self::$allMessageKeys)) {
wfProfileIn(__METHOD__ . '::miss');
$messageKeys = $lang->getAllMessageKeys();
self::$allMessageKeys = $messageKeys['messages'];
$langCode = $lang->getCode();
// append legacy data
if (isset(Language::$dataCache->legacyData[$langCode]['messages'])) {
self::$allMessageKeys = array_unique(array_keys(Language::$dataCache->legacyData[$langCode]['messages']), self::$allMessageKeys);
}
wfProfileOut(__METHOD__ . '::miss');
}
wfProfileOut(__METHOD__);
return self::$allMessageKeys;
}